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E. WALLACE. STREET SW EEPER AND LOADER.

No. 494,660. v Patented Apr. 4, 1893.

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E. WALLACE. STREET SWBEPER AND LOADER.

No. 494,660. Patented Apr. 4, 1893.

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UNITED STATES PATENT- OFFICE.

EUGENE WALLACE, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO LEMUEL P. BLAIR, OF SAME PLACE.

STREET-SWEEPER AND LOADER.

SPECIFICATION forming part of Letters Patent No.494,660, dated April 4, 1893.

Application filed November 28, 1890. Renewed September 24, 1892. Serial No.446fl'7'7. (No model.) 7

To all whom it may concern:

Be it known that I, EUGENE WALLACE, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain Improvements in Street-Sweepers and Loaders,

of which the following is a specification.

My invention relates to street sweepers of the class which are adapted to take up the dirt from the pavement and load it directly into a suitable receptacle, thereby doing away with the necessityof employinga gang of men with teams and carts to carry away the dirt from the sides of the streets where it is left by the street sweepers in ordinary use.

The objects of my invention are to simplify and cheapen the construction of devices of the class named.

My invention consists generally in constructions and combinations hereinafter described and particularly pointed out in the claims.

My invention will be more readily understood by reference to the accom pan yin gdrawings, in which- Figure l is a plan view of a sweeper and loader embodying my invention. Fig. 2 is a side elevation of the same, the near wheels of the machine and cart being removed. Figs. 3 and 4 are side and end views of one of the cross sweepers used on the conveyor. Fig. 5 is a sectional view of the revolving brush. Figs. 6 and 7 are respectively end and plan detail views showing means employed for raising the inclined plate and the sweeper brushes. Fig. 8 is a detail view of the sliding blockarranged on the sills. Fig. 9 isa detail View showing means for adjusting the brush guides. Fig. 10 is a detail showing the manner of attaching the angle brush to the frame of the machine.

As shown in the general figures 1 and 2 my machine consists in a loader as well as a sweeper, the same being adapted to gather the dirt from the pavement, and secondly to depositit directly in the cart 2. The machine, speaking of the device as separate from the cart, is attached directly behind the cart or wagon 2 by means of the coupling link or yoke cart which when it has been filled may be detached and replaced by another. A strong axle 6 extends between the large wagon wheel 7 and 8, and is adapted to bear the whole weight of the machine. Sills 9 extend forward from this axle 6 and are connected across their forward ends by a cross beam or the coupling rod yoke 3 having the loop 11 through which to place the pin 4. Uprights 12 are raised on the forward ends of these sills and are adapted to support the inclined plate or board 13, from the top of which the chute 5 extends. The inclined board is pivoted on the rod or trunnions 14 secured in the standards 12.

The brush mechanism of the machine is in two parts, namely, the endless convever made up of the two endless chains 15 having the cross brushes 16, and'second the revolving cylinder brush 41 set at an angle to the main body of the sweeper, as shown in Fig. 1. The

upper ends of the link chain 15 run oversmall sprocket wheels 18 secured on the shaft 19 having bearings in the standards 12. The lower loops of these chains 15 are held bv the larger sprockets 20 and 21 placed substantially in the same horizontal plane and close down to the ground, so that the cross brushes sweep the same. These sprockets 20 and 21 are secured on the shafts 22 and 23, the ends of which are secured in the bearings 24 and 25 clamped or otherwise secured upon the depending legs 26 and 27 of the main tilting frame made up of the iron pipe rectangle having the long sides 28 and the ends 29 and 30. This tilting frame is pivoted on the axle 6 by the pivot blocks 31 secured on the axle. Horizontal brace and guide rods 32 extend longitudinally between the lower end of the depending legs 26 and 27. The ends of the cross brushes extend considerably beyond the chains 15, and as they are brought down between the sprockets 20 and 21 are passed beneath the guide rods or pipes 32, and are thereby held down close to the ground. The brushes are thus made to support the weight of the rear end of the machine. One end of each guide rod 32 may be made adjustable up or down so as to vary the pressure upon the brushes 16. This adjustment may be obtained by the arrangement shown in Figs. 2

and 9. The lower end of the pipe 27 is left open to receive the tongue 33 and holes 34 and 35 are provided in the pipe and the tongue so that the bolt 36 may be inserted to lock the same together. As shown the lower part of the frame work made up of the guides 32 is extended in from each side somewhat and is narrower than the upper rectangular frame, angles 36" being preferably made in the legs or pipes 26 and 27 to carry the rods 32 in so that they will engage the backs of the brushes 16, a bracket 37 extends rearwardly from the axle 6, and in connection with the brackets 38 also secured thereto, serves to support the short axles 39 hearing the large sprocket idlers 40, which serve to uphold the upper return lengths of the endless chains 15, thereby taking off a great portion of the strain from the sprockets 18 and 20. The cylinder brush 41 revolves upon an axle 42 shown in Fig. 5, which axle has hearings in the ends of the depending arms 42 and 43 formed on the tie strap 44 having the shoulder portion 45. This shoulder portion is matched by a second strap 46 of a like form secured thereto by bolts 47, and held separate therefrom by the blocks 48. The slot thus formed is adapted to receive the flat hook end 49 of the depending brace arm 50, which has a horizontal bar portion 51 extending across the top of the rectangular frame and secured in place by the slotted blocks 52 and bolts 53 thereon. The outer end of the cylinder brush and the arbor thereof are preferably tied to the end of the axle O by the pivotal bar or link 54, as shown in Fig. 1. The inner end of the shaft 42 is provided with a sprocket 55 adapted to be driven by the sprocket chain 56 extending down from the larger sprocket 57 secured in the angle bearings 58 on the bracket 37 and driven by the miter gear 59. Poweris transmitted to the miter gear through the large idler 40 which is revolved by the chain 15 passing down over it. The inner end of the shaft 42 is inovably linked to the rear part of the machine frame by a short link bar 60.

The brush mechanism is driven by the rotation of the large wagon wheel 7 bearing the large gear wheel 61 adapted to mesh with the smaller gear 62 secured upon the shaft 63 extending through to the other side of the machine and provided with the large sprocket 64. From the large sprocket 64 the link belt 65 extends up over the sprocket 66 secured on the shaft 19 hearing the small sprockets 18 over which the endless brush conveyor chains 15 pass. The shaft (33 is secured in bearings 67, and the bearings are bolted on to the slidable sills 68, which with the stout cross bars (39 make up a strong movable frame. This frame is secured beneath the large sills 9 by the bolts 70 passing through slots 71 in the sills, as shown in Fig. 8. By drawing this frame forward the gear 62 may be drawn out of engagement with the large gear 61 to stop the movement of the brushes. This may be done by means of the lever 72 pivoted on the front of thecart, as shown in Fig. 2, and having its lower ends, and having the reach rod 73 extending from its lower end back to the small coupling 74 on the forward cross beam 69. When the brushes are stopped they should immediately be raised from the ground and I have so constructed my machine that the same movement of the lever 72 which separates the gears 63 and 61 raises the rear end of the sweeper. This construction is shown in Figs. 2 (3 and 7. The stout lever 75 is pivoted on the stationary frame of the machine by the cross shaft 76 secured on the sills 9 and braced by rods 77. The lower end of this lever is provided with the roller 78 adapted to engage the under side of the inclined plate 13 to raise the lower end of the same off the ground when the upper end of the lever is pulled down. The upper end of the lever 75 engages the loose pulley or roller 79 provided on the end 29 of the rectangular supporting frame. A link or links 80 extend from a point 81 on the upper portion of the lever 75 to pivot blocks 82 on the cross bar 69. It will be seen that upon drawing back the lever 72 that the block 69 will be drawn forward, thereby drawing the gear 62 out of engagement with the gear 61 and pulling down thelever 75 into the dotted line position, thereby raising the slanting plate or shelf and lowering the forward end of the rectangular frame pivoted on the axle 6, by the pivot blocks 31, thereby raising the rear end of the machine and the sweeping brushes. I provide the slanting mold board 83. This mold board is set at an angle so as to throw any stones or blocks out, to one side of the machine, and into the path of the cylinder brush 41. The mold board is supported by braces 84. The ends of the cross brushes 16 nearest the wheel 7 are preferably flared, as shown at 85 Fig. 3,50 as to sweep close to the strip 86 placed on the edge of the slanting plate to prevent the dirt from falling off the edge thereof. This strip is not needed on the other side of the plate as any dirt which may drop therefrom is caught by the cylinder brush and thrown back into the path of the cross brushes 16. A heavy sheet or plate of metal 87 is provided on the upper face of the slanting plate on board 13 to make the same more durable. I provide the rods 88 extending between the rear end of the machine and the tops of the standards 12 and adapted to support a canvas or other suitable cover for the machine. This cover is usually made to extend down to the ground and prevents the flying of dust. The lever 72 may be locked back against the front of the cart 2 by the hook 89. The cross brushes 16 are provided on the stout backs 90 secured on the chains 15. All of the sprocket wheels are of course tightly secured upon their shafts to prevent any disarrangement of the sprocket chains. I sometimes flare out the outer end of the cylinder brush, as shown in Fig. 5, so as to be able to run closer in to the curb.

IIO

The operation of my machine may be ex: plained as follows :Say that the machine has been drawn to the desired street, the driver of the cart would unloose the lever 72, and thereby lower the brushes to the ground and throw the gear 63 into engagement with the gear wheel on the large wheel 7. The cart being then drawn ahead, the conveyer with its numerous cross brushes 16 is rotated rapidly, thereby in turn operating the cylinder brush 41. The cross brushes as they pass down beneath the sprocket wheel 20 strike the ground and sweep all the dirt and rubbish forward onto the lower end of the inclined plate or board 13 The brushes follow up the dirt and carry it up along the plate and throw it over the upper end thereof into the chute 5 from whence the dirt drops into the box of the cart. All dirt which comes in the path of the revolving cylinder brush 41 is thrown thereby into the path of the conveyer brushes. The arrangement is such that at least one brush is always beneath'the rods 32, so as to at all times properly support the rear end of the machine.

It is obvious that a suitable receptacle might be formed directly with the machine, a four wheeled wagon being used to carry the machine and said receptacle. The disadvantage however, of this arrangement is, that in order to accomplish much work without frequent dumping of the receptacle the same must be made large, and as a consequence avery large load of dirt constantly growing heavier and heavier as the machine progresses, must be drawn until the work of the machine is finished. Carts or small wagons are therefore made use of which when fully loaded may be easily detached and drawn away without the extra weight of the machine, while the machine may be left standing in the street until the return of the cart, or may be coupled to an empty cart and used continuously with only slight interruption or coupling and uncoupling.

It is further obvious that the levers for regulating the height of the brushes and inclined plate, and for throwing in and out the power gear mechanism may be provided directly on the machine, in which case the carts would not need to be fitted with operating levers. It is preferable, however, to provide the operating lever within easy reach of the driver, as it is often necessary to quicklyraise the brushes from the ground.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination in a device of the class described, of the endless chains 15, with the upper sprocket Wheels, the sprocket wheels 20 and the sprocket wheels 21, the main tilting frame having the depending legs provided with bearings for the shafts of said sprockets 20 and 21, the bars 32 extending between said legs, the inclined plate, the gear as described.

2. The combination in a device of the class described, of the wheels 7 and 8, with the axle 6, the sills extending forward therefrom, the upright standards 10 provided on said sills, the slanting plate or board 13- pivotally-secured thereon and having its lower end extended down close to the ground, the spout 5 and endless conveyer chains having cross brushes secured atregular distances upon the same, horizontally arranged guides whereby one or more of said brushes are constantly held in contact with the ground, the arrangement of said conveyer and brushes being such as to carrythe dirt up said inclined shelf, and the cart 2 arranged beneath the spout 5 on the upper end of said shaft and means for at taching said sweeper mechanism to said cart, substantially as described.

3. The combination in a device of the class described, of the wheels 7 and 8, and the axle 6, with the sills extending forward from said axles, the upright thereon, the slanting shelf pivoted on said uprights, and confined between said sills, the power gear 61 arranged to move with the wheel '7, the shaft 63, the gear 62 thereon adapted to mesh with said power gear, the sprocket 64 on the shaft 63, shaft 63 adapted to be moved to disengage said gear 62, from the power gear 63, the shaft 19 supported in bearings in said uprights, the rectangular tilting frame consisting of the sides 28 and ends 29, said frame being pivotally supported on said axle, the depending portions or legs 26 and 27 of said frame the same connected at their lower ends by the guide bars 32, the sprockets 18, 20 and 21 the endless chains 15 and the cross brushes 16 provided thereon, substantially as described.

4. The combination with the endless brush conveyer adapted to rotate upon the sprocket wheels 18, 20 and 21, with the wheels 7.and 8, the axle 6, the tilting frame, and the depending portions thereof, whereby the said sprocket wheels 20, and 21 are retained in position, the slanting shelf, the cart 2, the lever 72 pivoted thereon, and means provided in connection with said lever whereby upon operating the same the sweeper brushes are raised or lowered from the ground and the angle of the slanting shelf altered, substantially as described.

5. The combination in a device of the class described, of supporting wheels provided in connection with a suitable axle, with the endless brush conveyer adapted to run over suitable sprockets the cylinder brush 41, the frame of the machine by which said brush is supported, the sprocket wheels 40 engaging said endless conveyer and adapted to operate IIO the miter gear 59, a sprocket wheel upon the shaft of said brush 41, and a link chain or belt extending over and between a sprocket provided in connection with a miter gear and said sprocket on the brush shaft whereby when said conveyer is rotated said cylinder brush is also operated, substantially as described.

(J. The combination inad'evice of the class described, of the tilting frame adapted to support the rearend of the sweeping mechanism, the car provided with the receptacle or box, the lever 72 thereon, the rod 73, the slidable frame carrying the shaft 63, the slanting shelf 13 pivoted 011 the standards 12, said tilting frame pivoted on the axle by the blocks 31, the lever 75 pivotally secured upon the sills 0, the lower end of said lever engaging the under sideof said slanting shelf, and the upper end of the lever engaging the end 29 of said til-ting frame, and a link or links 30 piv otally connecting the lever 75 with the said slidable frame, substantially as described.

7. The combination in adevice of the class described, of the axle, with the sills, the upright standards made up of sides and ends 28 and 29, and the frame work 88, adapted to support a suitable cover for the machine, substantially as described.

8. The combination in a device of the class described, of the. sills 9, with the sliding sills 68 adapted to support the shaft 63, the lever 75 pivoted on the sills, the tilting frame, the link 80, the cross bars 69 extending between the sills 6S, and means for moving the same forward and back, substantially as described.

9. The combination in a device of the class described of the wheels 7 and 8 provided on the axle 6, with the horizontal sills bearing uprights 12 on their forward ends, the slanting shelf orboard 13 hinged or pivoted on said uprights, sprockets 18 arranged upon a shaft having hearings in said standards or up rights 12, a frame extending forward and back over said axle and having downward projections, the wheels 20 and 21 secured thereon and in substantially the same horizontal plane, the sprocket chain passing over said wheels 18, and 21 and the mold board 83 secured beneath and independent of said slanting board 13 and adapted to throw the larger objects out to one side thereof, as described.

10. The combination in a device of the class described of the wheels 7 and 8 with the axle 6, the sills thereon, the uprights or standards 12, the slanting board 13, the frame secured on said axle by pivotal bearings 31, the legs 27 and 26 extending down from said frame and secured across their lower ends by adjustable guide bars 32, shafts 22 and 23 secured on the lower ends of said legs 26 and 27 and occupying positions in substantially the same horizontal plane, sprocket wheels 20 and 21 secured on said shafts, endless chains 15 passing over the sprocket wheels 18, 20 and 21, the cross brushes secured at equal distances around and upon said chains, means for driving said chains or belts by the rota- ,tion of said wagon wheels, the distance between the sprockets 20 and 21 being such that one or more brushes are at all times held in contact with the ground, said distancebeing greater than the distance between two of said cross brushes, substantially as described.

11. The combination with the frame having sides 28 and ends 29 of the axle 6 whereon the same is pivotally'secured, the wheels 7 and S, the sprocket chains 15, sprockets 18, 2O 21 and 10 for supporting the same, said sprockets 40 being secured upon a bracket or brackets 37 extending from said axle 6, the miter gear 59 also arranged thereon, the sprocket 57 in connection therewith, the cylinder brush ll arranged at an angle with the main frame of the machine and resting on the ground, a sprocket on the inner end of the shaft thereof, a chain or belt 56 passing therefrom over the sprocket 57, the frame for said brush having the slotted portion adapted to receive the lower end of the strap having the reach 51 extending across and secured upon the bars 28 of the frame and the strap 54:, substantially as described.

In testimony whereof I have hereunto set my hand this 20th day of November, 1890.

EUGENE \VALLACE.

In presence of- A. M. GASKILL, C. G. HAVVLY. 

